Designed for unitary split systems and heat pump package units.
Instantaneous reversing.
Brass body construction with copper tubes
Operates on pressure differential high and low sides of refrigerant systems. ,br>
The way the reversing valve works is the solenoid valve opens pressure ports to operate a nylon slider in the cylinder. This sleeve can jam or bind half way (called "wind milling") and will over heat the compressor in a few minutes.
Once this happens there is little chance that the valve will work again. If the valve is over heated when being installed it will be worthless.
If the system is very contaminated after a Burn Out it may stop the valve form working but there is the possibility of getting it to work again after several cycles.
It is possible for the valve to stick in the cooling mode but it is more likely to stick in the heat mode.